HYDRAULIC ACTUATOR Russian patent published in 2005 - IPC

FIELD: high-accuracy control apparatuses.

SUBSTANCE: hydraulic actuator includes electromechanical converter with damper in outlet shaft; housing with inlet ducts; two casings coaxially mounted in threaded openings at both sides of damper with possibility of axial motion of nozzle and having axial ducts hydraulically communicated through radial passages with supply ducts of housing. End of each nozzle opposite relative to damper extends outside housing and it is provided with member for controlling position of nozzle relative to damper and fixing member. End of each nozzle is also provided with two lids. Each lid has opening providing access to member for controlling position of nozzle relative to damper. Each fixing member is arranged on respective lid. End of each nozzle opposite to damper is provided with shoulder. Unit for forcing nozzle to housing is arranged between shoulder and lid. Nozzles are provided with members for compensating displacement value at forcing them.

EFFECT: enhanced accuracy of controlling process.

2 cl, 3 dwg